AJAX which stands for Asynchronous JavaScript and XML is a way of programming for the Web that gets rid of the hourglass, i.e. downloading problem. Data, design and content are combined together into a seamless whole. When your client clicks on something on an AJAX driven application, there is very little lag time. The page simply displays what he is asking for. If you don’t believe this, visit Google Maps for a few seconds. Scroll around and watch as the map updates almost before your eyes blink. There is very little lag and you don’t have to wait for pages to refresh or reload.
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The underlying technology for the browser user interface approach has existed for a decade but the term AJAX was coined in 2005. The core of this approach is the ability to make dynamic, asynchronous data requests of a Web server without having to reload the Web page or hit the refresh button. This approach enables Web developers to build rich UIs that run on every browser and across every popular platform.
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The developers and designers have begun to realize that better user-experience plays a vital role in market success. The success of Ajax-based applications such as Google Maps over more traditional alternatives like MapQuest show that the products that offer better user experience will be successful. Ajax is a big contributor in making web applications usable. It eliminates page refresh problems and improves slow response that has affected web applications since their inception. The cause behind this is it allows pages to request small bits of information from the server instead of whole pages. People always want decent user interfaces and are eager to invest in it.
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Google Reader which is a good example AJAX application, is a highly optimized feed reader that comes with nice keyboard support. It is full of great accessible features. Developers have modified in the code structure to bring about a widespread JavaScript framework. This framework enhances the accessibility of AJAX applications. It is referred to as AxsJAX. This is an open source project and tries to come out of the shadow of Google specific techniques. A large number of web developers have contributed in a big way to build a powerful framework. Web 2.0 applications will be greatly benefited by this framework as it improves the accessibility features of these applications through speedy prototyping.
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Information technology rules this world. But one of the main apprehensions of information technology is making these technologies as competent as possible. It is a decisive factor in the success of organizations in this world of cut-throat competition. These organizations are now heavily dependent upon applications and operating systems which are stored and used over the Internet. It is very difficult to run applications on a wide array of platforms and for different purposes. On the other hand, there are technologies like Flash and Java Applets which have strived hard to provide web applications with more user-friendliness and dynamism.
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Ajax which stands for Asynchronous JavaScript and XML is a way of programming for the Web that gets rid of the hourglass, i.e. downloading problem. Data, design and content are combined together into a seamless whole. When your client clicks on something on an Ajax driven application, there is very little lag time. The page simply displays what he is asking for. If you don’t believe this, visit Google Maps for a few seconds. Scroll around and watch as the map updates almost before your eyes blink. There is very little lag and you don’t have to wait for pages to refresh or reload. CPAINT is a popular toolkit used to build AJAX applications. But it faces with a problem recently.
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Asynchronous JavaScript and XML (AJAX) mainly consists of JavaScript, HTML, DHTML, Document Object Model (DOM) and XMLHttpRequestObject. It transforms boring web interfaces into most interactive AJAX applications. It is basically a JavaScript technology that communicates with any web application on the server itself rather than your HTML form being submitted to that application directly. XMLHttpRequestObject is a vital component of every AJAX application. The request/response model in AJAX begins with making a request.
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As it happens with any technology, there are ample ways to make mistakes with Ajax. Some of the problems do not have easy solutions currently but will improve as Ajax matures. As the developer community is gaining experience by developing Ajax applications, finding solutions will be easy as best practices and guidelines will be documented.
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Everything in this world goes through certain phases. Human beings also have different stages in their lives. This is what we call life cycle. It is no exception that software applications and programs follow a development life cycle. This is referred as Software Development Life Cycle or SDLC. This concept is coined during 1970s as a medium to build software. The chief objective of this life cycle is to develop applications that fulfill the market needs and not as per the preferences of the developers. The concept is more business oriented as it is practiced to ensure that the software is developed and launched at the right time.
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